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Comparing libev/ev.c (file contents):
Revision 1.101 by root, Sun Nov 11 04:04:23 2007 UTC vs.
Revision 1.146 by root, Tue Nov 27 09:17:51 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
40	# ifndef EV_USE_MONOTONIC	44	# ifndef EV_USE_MONOTONIC
41	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
42	# endif	46	# endif
43	# ifndef EV_USE_REALTIME	47	# ifndef EV_USE_REALTIME
44	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
45	# endif	49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
46	# endif	57	# endif
47		58
48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)	59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
49	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
50	# endif	65	# endif
51		66
52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)	67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
53	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
54	# endif	73	# endif
55		74
56	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)	75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
58	# endif	81	# endif
59		82
		83	# ifndef EV_USE_KQUEUE
60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
62	# endif	97	# endif
63		98
64	#endif	99	#endif
65		100
66	#include <math.h>	101	#include <math.h>
…		…
75	#include <sys/types.h>	110	#include <sys/types.h>
76	#include <time.h>	111	#include <time.h>
77		112
78	#include <signal.h>	113	#include <signal.h>
79		114
80	#ifndef WIN32	115	#ifndef _WIN32
81	# include <unistd.h>
82	# include <sys/time.h>	116	# include <sys/time.h>
83	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
84	#endif	124	# endif
		125	#endif
		126
85	/**/	127	/**/
86		128
87	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
88	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
89	#endif	135	#endif
90		136
91	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
92	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
93	#endif	139	#endif
94		140
95	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
96	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
97	#endif	147	#endif
98		148
99	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
100	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
101	#endif	151	#endif
102		152
103	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
104	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
105	#endif	155	#endif
106		156
107	#ifndef EV_USE_WIN32
108	# ifdef WIN32
109	# define EV_USE_WIN32 0 /* it does not exist, use select */
110	# undef EV_USE_SELECT
111	# define EV_USE_SELECT 1
112	# else
113	# define EV_USE_WIN32 0
114	# endif
115	#endif
116
117	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
118	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
119	#endif	159	#endif
120		160
121	/**/	161	/**/
122		162
123	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
128	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
129	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
130	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
131	#endif	171	#endif
132		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
133	/**/	177	/**/
134		178
135	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
137	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
139		183
140	#ifdef EV_H	184	#ifdef EV_H
141	# include EV_H	185	# include EV_H
142	#else	186	#else
143	# include "ev.h"	187	# include "ev.h"
144	#endif	188	#endif
145		189
146	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
147	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
		192	# define inline_size static inline /* inline for codesize */
		193	# if EV_MINIMAL
148	# define inline inline	194	# define noinline __attribute__ ((noinline))
		195	# define inline_speed static noinline
		196	# else
		197	# define noinline
		198	# define inline_speed static inline
		199	# endif
149	#else	200	#else
150	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
		202	# define inline_speed static
151	# define inline static	203	# define inline_size static
		204	# define noinline
152	#endif	205	#endif
153		206
154	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
155	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
156		209
157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
159		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
160	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
161	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
162	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
163		219
164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165		221
166	#ifdef WIN32	222	#ifdef _WIN32
167	# include "ev_win32.c"	223	# include "ev_win32.c"
168	#endif	224	#endif
169		225
170	/*****************************************************************************/	226	/*****************************************************************************/
171		227
172	static void (*syserr_cb)(const char *msg);	228	static void (*syserr_cb)(const char *msg);
173		229
		230	void
174	void ev_set_syserr_cb (void (*cb)(const char *msg))	231	ev_set_syserr_cb (void (*cb)(const char *msg))
175	{	232	{
176	syserr_cb = cb;	233	syserr_cb = cb;
177	}	234	}
178		235
179	static void	236	static void noinline
180	syserr (const char *msg)	237	syserr (const char *msg)
181	{	238	{
182	if (!msg)	239	if (!msg)
183	msg = "(libev) system error";	240	msg = "(libev) system error";
184		241
…		…
191	}	248	}
192	}	249	}
193		250
194	static void *(*alloc)(void *ptr, long size);	251	static void *(*alloc)(void *ptr, long size);
195		252
		253	void
196	void ev_set_allocator (void *(*cb)(void *ptr, long size))	254	ev_set_allocator (void *(*cb)(void *ptr, long size))
197	{	255	{
198	alloc = cb;	256	alloc = cb;
199	}	257	}
200		258
201	static void *	259	static void *
…		…
220	typedef struct	278	typedef struct
221	{	279	{
222	WL head;	280	WL head;
223	unsigned char events;	281	unsigned char events;
224	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
225	} ANFD;	286	} ANFD;
226		287
227	typedef struct	288	typedef struct
228	{	289	{
229	W w;	290	W w;
…		…
240	#include "ev_vars.h"	301	#include "ev_vars.h"
241	#undef VAR	302	#undef VAR
242	};	303	};
243	#include "ev_wrap.h"	304	#include "ev_wrap.h"
244		305
245	struct ev_loop default_loop_struct;	306	static struct ev_loop default_loop_struct;
246	static struct ev_loop *default_loop;	307	struct ev_loop *ev_default_loop_ptr;
247		308
248	#else	309	#else
249		310
250	ev_tstamp ev_rt_now;	311	ev_tstamp ev_rt_now;
251	#define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
252	#include "ev_vars.h"	313	#include "ev_vars.h"
253	#undef VAR	314	#undef VAR
254		315
255	static int default_loop;	316	static int ev_default_loop_ptr;
256		317
257	#endif	318	#endif
258		319
259	/*****************************************************************************/	320	/*****************************************************************************/
260		321
…		…
270	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
271	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
272	#endif	333	#endif
273	}	334	}
274		335
275	inline ev_tstamp	336	ev_tstamp inline_size
276	get_clock (void)	337	get_clock (void)
277	{	338	{
278	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
279	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
280	{	341	{
…		…
293	{	354	{
294	return ev_rt_now;	355	return ev_rt_now;
295	}	356	}
296	#endif	357	#endif
297		358
298	#define array_roundsize(type,n) ((n) | 4 & ~3)	359	#define array_roundsize(type,n) (((n) | 4) & ~3)
299		360
300	#define array_needsize(type,base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
301	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
302	{ \	363	{ \
303	int newcnt = cur; \	364	int newcnt = cur; \
…		…
318	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
319	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
320	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
321	}	382	}
322		383
323	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
324	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
325	#define array_free_microshit(stem) \
326	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
327
328	#define array_free(stem, idx) \	384	#define array_free(stem, idx) \
329	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
330		386
331	/*****************************************************************************/	387	/*****************************************************************************/
332		388
333	static void	389	void noinline
		390	ev_feed_event (EV_P_ void *w, int revents)
		391	{
		392	W w_ = (W)w;
		393
		394	if (expect_false (w_->pending))
		395	{
		396	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		397	return;
		398	}
		399
		400	w_->pending = ++pendingcnt [ABSPRI (w_)];
		401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		404	}
		405
		406	void inline_size
		407	queue_events (EV_P_ W *events, int eventcnt, int type)
		408	{
		409	int i;
		410
		411	for (i = 0; i < eventcnt; ++i)
		412	ev_feed_event (EV_A_ events [i], type);
		413	}
		414
		415	/*****************************************************************************/
		416
		417	void inline_size
334	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
335	{	419	{
336	while (count--)	420	while (count--)
337	{	421	{
338	base->head = 0;	422	base->head = 0;
…		…
341		425
342	++base;	426	++base;
343	}	427	}
344	}	428	}
345		429
346	void	430	void inline_speed
347	ev_feed_event (EV_P_ void *w, int revents)
348	{
349	W w_ = (W)w;
350
351	if (w_->pending)
352	{
353	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
354	return;
355	}
356
357	w_->pending = ++pendingcnt [ABSPRI (w_)];
358	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
359	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
360	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
361	}
362
363	static void
364	queue_events (EV_P_ W *events, int eventcnt, int type)
365	{
366	int i;
367
368	for (i = 0; i < eventcnt; ++i)
369	ev_feed_event (EV_A_ events [i], type);
370	}
371
372	inline void
373	fd_event (EV_P_ int fd, int revents)	431	fd_event (EV_P_ int fd, int revents)
374	{	432	{
375	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
376	struct ev_io *w;	434	ev_io *w;
377		435
378	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	436	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
379	{	437	{
380	int ev = w->events & revents;	438	int ev = w->events & revents;
381		439
382	if (ev)	440	if (ev)
383	ev_feed_event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
…		…
388	ev_feed_fd_event (EV_P_ int fd, int revents)	446	ev_feed_fd_event (EV_P_ int fd, int revents)
389	{	447	{
390	fd_event (EV_A_ fd, revents);	448	fd_event (EV_A_ fd, revents);
391	}	449	}
392		450
393	/*****************************************************************************/	451	void inline_size
394
395	static void
396	fd_reify (EV_P)	452	fd_reify (EV_P)
397	{	453	{
398	int i;	454	int i;
399		455
400	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
401	{	457	{
402	int fd = fdchanges [i];	458	int fd = fdchanges [i];
403	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
404	struct ev_io *w;	460	ev_io *w;
405		461
406	int events = 0;	462	int events = 0;
407		463
408	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	464	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
409	events |= w->events;	465	events |= w->events;
410		466
		467	#if EV_SELECT_IS_WINSOCKET
		468	if (events)
		469	{
		470	unsigned long argp;
		471	anfd->handle = _get_osfhandle (fd);
		472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		473	}
		474	#endif
		475
411	anfd->reify = 0;	476	anfd->reify = 0;
412		477
413	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
414	anfd->events = events;	479	anfd->events = events;
415	}	480	}
416		481
417	fdchangecnt = 0;	482	fdchangecnt = 0;
418	}	483	}
419		484
420	static void	485	void inline_size
421	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
422	{	487	{
423	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
424	return;	489	return;
425		490
426	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
427		492
428	++fdchangecnt;	493	++fdchangecnt;
429	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
430	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
431	}	496	}
432		497
433	static void	498	void inline_speed
434	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
435	{	500	{
436	struct ev_io *w;	501	ev_io *w;
437		502
438	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
439	{	504	{
440	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
441	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	506	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
442	}	507	}
443	}	508	}
444		509
445	static int	510	int inline_size
446	fd_valid (int fd)	511	fd_valid (int fd)
447	{	512	{
448	#ifdef WIN32	513	#ifdef _WIN32
449	return !!win32_get_osfhandle (fd);	514	return _get_osfhandle (fd) != -1;
450	#else	515	#else
451	return fcntl (fd, F_GETFD) != -1;	516	return fcntl (fd, F_GETFD) != -1;
452	#endif	517	#endif
453	}	518	}
454		519
455	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
456	static void	521	static void noinline
457	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
458	{	523	{
459	int fd;	524	int fd;
460		525
461	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
…		…
463	if (!fd_valid (fd) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
464	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
465	}	530	}
466		531
467	/* called on ENOMEM in select/poll to kill some fds and retry */	532	/* called on ENOMEM in select/poll to kill some fds and retry */
468	static void	533	static void noinline
469	fd_enomem (EV_P)	534	fd_enomem (EV_P)
470	{	535	{
471	int fd;	536	int fd;
472		537
473	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
476	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
477	return;	542	return;
478	}	543	}
479	}	544	}
480		545
481	/* usually called after fork if method needs to re-arm all fds from scratch */	546	/* usually called after fork if backend needs to re-arm all fds from scratch */
482	static void	547	static void noinline
483	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
484	{	549	{
485	int fd;	550	int fd;
486		551
487	/* this should be highly optimised to not do anything but set a flag */	552	/* this should be highly optimised to not do anything but set a flag */
…		…
493	}	558	}
494	}	559	}
495		560
496	/*****************************************************************************/	561	/*****************************************************************************/
497		562
498	static void	563	void inline_speed
499	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
500	{	565	{
501	WT w = heap [k];	566	WT w = heap [k];
502		567
503	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
510	heap [k] = w;	575	heap [k] = w;
511	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
512		577
513	}	578	}
514		579
515	static void	580	void inline_speed
516	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
517	{	582	{
518	WT w = heap [k];	583	WT w = heap [k];
519		584
520	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
534		599
535	heap [k] = w;	600	heap [k] = w;
536	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
537	}	602	}
538		603
539	inline void	604	void inline_size
540	adjustheap (WT *heap, int N, int k)	605	adjustheap (WT *heap, int N, int k)
541	{	606	{
542	upheap (heap, k);	607	upheap (heap, k);
543	downheap (heap, N, k);	608	downheap (heap, N, k);
544	}	609	}
…		…
554	static ANSIG *signals;	619	static ANSIG *signals;
555	static int signalmax;	620	static int signalmax;
556		621
557	static int sigpipe [2];	622	static int sigpipe [2];
558	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
559	static struct ev_io sigev;	624	static ev_io sigev;
560		625
561	static void	626	void inline_size
562	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
563	{	628	{
564	while (count--)	629	while (count--)
565	{	630	{
566	base->head = 0;	631	base->head = 0;
…		…
571	}	636	}
572		637
573	static void	638	static void
574	sighandler (int signum)	639	sighandler (int signum)
575	{	640	{
576	#if WIN32	641	#if _WIN32
577	signal (signum, sighandler);	642	signal (signum, sighandler);
578	#endif	643	#endif
579		644
580	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
581		646
582	if (!gotsig)	647	if (!gotsig)
583	{	648	{
584	int old_errno = errno;	649	int old_errno = errno;
585	gotsig = 1;	650	gotsig = 1;
586	#ifdef WIN32
587	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
588	#else
589	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
590	#endif
591	errno = old_errno;	652	errno = old_errno;
592	}	653	}
593	}	654	}
594		655
595	void	656	void noinline
596	ev_feed_signal_event (EV_P_ int signum)	657	ev_feed_signal_event (EV_P_ int signum)
597	{	658	{
598	WL w;	659	WL w;
599		660
600	#if EV_MULTIPLICITY	661	#if EV_MULTIPLICITY
601	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	662	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
602	#endif	663	#endif
603		664
604	--signum;	665	--signum;
605		666
606	if (signum < 0 || signum >= signalmax)	667	if (signum < 0 || signum >= signalmax)
…		…
611	for (w = signals [signum].head; w; w = w->next)	672	for (w = signals [signum].head; w; w = w->next)
612	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
613	}	674	}
614		675
615	static void	676	static void
616	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
617	{	678	{
618	int signum;	679	int signum;
619		680
620	#ifdef WIN32
621	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
622	#else
623	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
624	#endif
625	gotsig = 0;	682	gotsig = 0;
626		683
627	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
628	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
629	ev_feed_signal_event (EV_A_ signum + 1);	686	ev_feed_signal_event (EV_A_ signum + 1);
630	}	687	}
631		688
632	static void	689	void inline_size
		690	fd_intern (int fd)
		691	{
		692	#ifdef _WIN32
		693	int arg = 1;
		694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		695	#else
		696	fcntl (fd, F_SETFD, FD_CLOEXEC);
		697	fcntl (fd, F_SETFL, O_NONBLOCK);
		698	#endif
		699	}
		700
		701	static void noinline
633	siginit (EV_P)	702	siginit (EV_P)
634	{	703	{
635	#ifndef WIN32	704	fd_intern (sigpipe [0]);
636	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
637	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
638
639	/* rather than sort out wether we really need nb, set it */
640	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
641	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
642	#endif
643		706
644	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
645	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
646	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
647	}	710	}
648		711
649	/*****************************************************************************/	712	/*****************************************************************************/
650		713
651	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
652		715
653	#ifndef WIN32	716	#ifndef _WIN32
654		717
655	static struct ev_signal childev;	718	static ev_signal childev;
656		719
657	#ifndef WCONTINUED	720	void inline_speed
658	# define WCONTINUED 0
659	#endif
660
661	static void
662	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
663	{	722	{
664	struct ev_child *w;	723	ev_child *w;
665		724
666	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	725	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
667	if (w->pid == pid || !w->pid)	726	if (w->pid == pid || !w->pid)
668	{	727	{
669	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
670	w->rpid = pid;	729	w->rpid = pid;
671	w->rstatus = status;	730	w->rstatus = status;
672	ev_feed_event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
673	}	732	}
674	}	733	}
675		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
676	static void	739	static void
677	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
678	{	741	{
679	int pid, status;	742	int pid, status;
680		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
681	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
682	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
683	/* make sure we are called again until all childs have been reaped */	751	/* make sure we are called again until all childs have been reaped */
		752	/* we need to do it this way so that the callback gets called before we continue */
684	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
685		754
686	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
687	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	756	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
688	}
689	}	757	}
690		758
691	#endif	759	#endif
692		760
693	/*****************************************************************************/	761	/*****************************************************************************/
694		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
695	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
696	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
697	#endif	768	#endif
698	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
699	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
716	{	787	{
717	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
718	}	789	}
719		790
720	/* return true if we are running with elevated privileges and should ignore env variables */	791	/* return true if we are running with elevated privileges and should ignore env variables */
721	static int	792	int inline_size
722	enable_secure (void)	793	enable_secure (void)
723	{	794	{
724	#ifdef WIN32	795	#ifdef _WIN32
725	return 0;	796	return 0;
726	#else	797	#else
727	return getuid () != geteuid ()	798	return getuid () != geteuid ()
728	|| getgid () != getegid ();	799	|| getgid () != getegid ();
729	#endif	800	#endif
730	}	801	}
731		802
732	int	803	unsigned int
733	ev_method (EV_P)	804	ev_supported_backends (void)
734	{	805	{
735	return method;	806	unsigned int flags = 0;
		807
		808	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		809	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		810	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		811	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		812	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		813
		814	return flags;
		815	}
		816
		817	unsigned int
		818	ev_recommended_backends (void)
		819	{
		820	unsigned int flags = ev_supported_backends ();
		821
		822	#ifndef __NetBSD__
		823	/* kqueue is borked on everything but netbsd apparently */
		824	/* it usually doesn't work correctly on anything but sockets and pipes */
		825	flags &= ~EVBACKEND_KQUEUE;
		826	#endif
		827	#ifdef __APPLE__
		828	// flags &= ~EVBACKEND_KQUEUE; for documentation
		829	flags &= ~EVBACKEND_POLL;
		830	#endif
		831
		832	return flags;
		833	}
		834
		835	unsigned int
		836	ev_embeddable_backends (void)
		837	{
		838	return EVBACKEND_EPOLL
		839	| EVBACKEND_KQUEUE
		840	| EVBACKEND_PORT;
		841	}
		842
		843	unsigned int
		844	ev_backend (EV_P)
		845	{
		846	return backend;
736	}	847	}
737		848
738	static void	849	static void
739	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
740	{	851	{
741	if (!method)	852	if (!backend)
742	{	853	{
743	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
744	{	855	{
745	struct timespec ts;	856	struct timespec ts;
746	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
751	ev_rt_now = ev_time ();	862	ev_rt_now = ev_time ();
752	mn_now = get_clock ();	863	mn_now = get_clock ();
753	now_floor = mn_now;	864	now_floor = mn_now;
754	rtmn_diff = ev_rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
755		866
756	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
757	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
758	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
759	else
760	methods = EVMETHOD_ANY;
761		871
762	method = 0;	872	if (!(flags & 0x0000ffffUL))
763	#if EV_USE_WIN32	873	flags |= ev_recommended_backends ();
764	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	874
		875	backend = 0;
		876	#if EV_USE_PORT
		877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
765	#endif	878	#endif
766	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
767	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
768	#endif	881	#endif
769	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
770	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
771	#endif	884	#endif
772	#if EV_USE_POLL	885	#if EV_USE_POLL
773	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
774	#endif	887	#endif
775	#if EV_USE_SELECT	888	#if EV_USE_SELECT
776	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
777	#endif	890	#endif
778		891
779	ev_init (&sigev, sigcb);	892	ev_init (&sigev, sigcb);
780	ev_set_priority (&sigev, EV_MAXPRI);	893	ev_set_priority (&sigev, EV_MAXPRI);
781	}	894	}
782	}	895	}
783		896
784	void	897	static void
785	loop_destroy (EV_P)	898	loop_destroy (EV_P)
786	{	899	{
787	int i;	900	int i;
788		901
789	#if EV_USE_WIN32	902	#if EV_USE_PORT
790	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
791	#endif	904	#endif
792	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
793	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
794	#endif	907	#endif
795	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
796	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
797	#endif	910	#endif
798	#if EV_USE_POLL	911	#if EV_USE_POLL
799	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
800	#endif	913	#endif
801	#if EV_USE_SELECT	914	#if EV_USE_SELECT
802	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
803	#endif	916	#endif
804		917
805	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
806	array_free (pending, [i]);	919	array_free (pending, [i]);
807		920
808	/* have to use the microsoft-never-gets-it-right macro */	921	/* have to use the microsoft-never-gets-it-right macro */
809	array_free_microshit (fdchange);	922	array_free (fdchange, EMPTY0);
810	array_free_microshit (timer);	923	array_free (timer, EMPTY0);
811	#if EV_PERIODICS	924	#if EV_PERIODIC_ENABLE
812	array_free_microshit (periodic);	925	array_free (periodic, EMPTY0);
813	#endif	926	#endif
814	array_free_microshit (idle);	927	array_free (idle, EMPTY0);
815	array_free_microshit (prepare);	928	array_free (prepare, EMPTY0);
816	array_free_microshit (check);	929	array_free (check, EMPTY0);
817		930
818	method = 0;	931	backend = 0;
819	}	932	}
820		933
821	static void	934	static void
822	loop_fork (EV_P)	935	loop_fork (EV_P)
823	{	936	{
		937	#if EV_USE_PORT
		938	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		939	#endif
		940	#if EV_USE_KQUEUE
		941	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		942	#endif
824	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
825	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
826	#endif
827	#if EV_USE_KQUEUE
828	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
829	#endif	945	#endif
830		946
831	if (ev_is_active (&sigev))	947	if (ev_is_active (&sigev))
832	{	948	{
833	/* default loop */	949	/* default loop */
…		…
846	postfork = 0;	962	postfork = 0;
847	}	963	}
848		964
849	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
850	struct ev_loop *	966	struct ev_loop *
851	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
852	{	968	{
853	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	969	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
854		970
855	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
856		972
857	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
858		974
859	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
860	return loop;	976	return loop;
861		977
862	return 0;	978	return 0;
863	}	979	}
864		980
…		…
877		993
878	#endif	994	#endif
879		995
880	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
881	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
882	#else	999	#else
883	int	1000	int
		1001	ev_default_loop (unsigned int flags)
884	#endif	1002	#endif
885	ev_default_loop (int methods)
886	{	1003	{
887	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
888	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
889	return 0;	1006	return 0;
890		1007
891	if (!default_loop)	1008	if (!ev_default_loop_ptr)
892	{	1009	{
893	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
894	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
895	#else	1012	#else
896	default_loop = 1;	1013	ev_default_loop_ptr = 1;
897	#endif	1014	#endif
898		1015
899	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
900		1017
901	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
902	{	1019	{
903	siginit (EV_A);	1020	siginit (EV_A);
904		1021
905	#ifndef WIN32	1022	#ifndef _WIN32
906	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
907	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
908	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
909	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
910	#endif	1027	#endif
911	}	1028	}
912	else	1029	else
913	default_loop = 0;	1030	ev_default_loop_ptr = 0;
914	}	1031	}
915		1032
916	return default_loop;	1033	return ev_default_loop_ptr;
917	}	1034	}
918		1035
919	void	1036	void
920	ev_default_destroy (void)	1037	ev_default_destroy (void)
921	{	1038	{
922	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
923	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
924	#endif	1041	#endif
925		1042
926	#ifndef WIN32	1043	#ifndef _WIN32
927	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
928	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
929	#endif	1046	#endif
930		1047
931	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
…		…
939		1056
940	void	1057	void
941	ev_default_fork (void)	1058	ev_default_fork (void)
942	{	1059	{
943	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
944	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
945	#endif	1062	#endif
946		1063
947	if (method)	1064	if (backend)
948	postfork = 1;	1065	postfork = 1;
949	}	1066	}
950		1067
951	/*****************************************************************************/	1068	/*****************************************************************************/
952		1069
953	static int	1070	int inline_size
954	any_pending (EV_P)	1071	any_pending (EV_P)
955	{	1072	{
956	int pri;	1073	int pri;
957		1074
958	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
…		…
960	return 1;	1077	return 1;
961		1078
962	return 0;	1079	return 0;
963	}	1080	}
964		1081
965	static void	1082	void inline_speed
966	call_pending (EV_P)	1083	call_pending (EV_P)
967	{	1084	{
968	int pri;	1085	int pri;
969		1086
970	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
971	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
972	{	1089	{
973	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
974		1091
975	if (p->w)	1092	if (expect_true (p->w))
976	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
977	p->w->pending = 0;	1096	p->w->pending = 0;
978	EV_CB_INVOKE (p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
979	}	1098	}
980	}	1099	}
981	}	1100	}
982		1101
983	static void	1102	void inline_size
984	timers_reify (EV_P)	1103	timers_reify (EV_P)
985	{	1104	{
986	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
987	{	1106	{
988	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
989		1108
990	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
991		1110
992	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
993	if (w->repeat)	1112	if (w->repeat)
…		…
1005		1124
1006	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1007	}	1126	}
1008	}	1127	}
1009		1128
1010	#if EV_PERIODICS	1129	#if EV_PERIODIC_ENABLE
1011	static void	1130	void inline_size
1012	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
1013	{	1132	{
1014	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1015	{	1134	{
1016	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
1017		1136
1018	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1019		1138
1020	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
1021	if (w->reschedule_cb)	1140	if (w->reschedule_cb)
1022	{	1141	{
1023	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1024
1025	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1026	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
1027	}	1145	}
1028	else if (w->interval)	1146	else if (w->interval)
1029	{	1147	{
…		…
1036		1154
1037	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1038	}	1156	}
1039	}	1157	}
1040		1158
1041	static void	1159	static void noinline
1042	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
1043	{	1161	{
1044	int i;	1162	int i;
1045		1163
1046	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
1047	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
1048	{	1166	{
1049	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
1050		1168
1051	if (w->reschedule_cb)	1169	if (w->reschedule_cb)
1052	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1053	else if (w->interval)	1171	else if (w->interval)
1054	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1058	for (i = periodiccnt >> 1; i--; )	1176	for (i = periodiccnt >> 1; i--; )
1059	downheap ((WT *)periodics, periodiccnt, i);	1177	downheap ((WT *)periodics, periodiccnt, i);
1060	}	1178	}
1061	#endif	1179	#endif
1062		1180
1063	inline int	1181	int inline_size
1064	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
1065	{	1183	{
1066	mn_now = get_clock ();	1184	mn_now = get_clock ();
1067		1185
1068	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1076	ev_rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
1077	return 1;	1195	return 1;
1078	}	1196	}
1079	}	1197	}
1080		1198
1081	static void	1199	void inline_size
1082	time_update (EV_P)	1200	time_update (EV_P)
1083	{	1201	{
1084	int i;	1202	int i;
1085		1203
1086	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
1088	{	1206	{
1089	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
1090	{	1208	{
1091	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
1092		1210
1093	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1211	/* loop a few times, before making important decisions.
		1212	* on the choice of "4": one iteration isn't enough,
		1213	* in case we get preempted during the calls to
		1214	* ev_time and get_clock. a second call is almost guarenteed
		1215	* to succeed in that case, though. and looping a few more times
		1216	* doesn't hurt either as we only do this on time-jumps or
		1217	* in the unlikely event of getting preempted here.
		1218	*/
		1219	for (i = 4; --i; )
1094	{	1220	{
1095	rtmn_diff = ev_rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
1096		1222
1097	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1098	return; /* all is well */	1224	return; /* all is well */
…		…
1100	ev_rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1101	mn_now = get_clock ();	1227	mn_now = get_clock ();
1102	now_floor = mn_now;	1228	now_floor = mn_now;
1103	}	1229	}
1104		1230
1105	# if EV_PERIODICS	1231	# if EV_PERIODIC_ENABLE
1106	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
1107	# endif	1233	# endif
1108	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
1109	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1110	}	1236	}
…		…
1114	{	1240	{
1115	ev_rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1116		1242
1117	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1243	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1118	{	1244	{
1119	#if EV_PERIODICS	1245	#if EV_PERIODIC_ENABLE
1120	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
1121	#endif	1247	#endif
1122		1248
1123	/* adjust timers. this is easy, as the offset is the same for all */	1249	/* adjust timers. this is easy, as the offset is the same for all */
1124	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
…		…
1144	static int loop_done;	1270	static int loop_done;
1145		1271
1146	void	1272	void
1147	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1148	{	1274	{
1149	double block;
1150	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1151		1278
1152	do	1279	while (activecnt)
1153	{	1280	{
1154	/* queue check watchers (and execute them) */	1281	/* queue check watchers (and execute them) */
1155	if (expect_false (preparecnt))	1282	if (expect_false (preparecnt))
1156	{	1283	{
1157	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1164		1291
1165	/* update fd-related kernel structures */	1292	/* update fd-related kernel structures */
1166	fd_reify (EV_A);	1293	fd_reify (EV_A);
1167		1294
1168	/* calculate blocking time */	1295	/* calculate blocking time */
		1296	{
		1297	double block;
1169		1298
1170	/* we only need this for !monotonic clock or timers, but as we basically	1299	if (flags & EVLOOP_NONBLOCK || idlecnt)
1171	always have timers, we just calculate it always */	1300	block = 0.; /* do not block at all */
		1301	else
		1302	{
		1303	/* update time to cancel out callback processing overhead */
1172	#if EV_USE_MONOTONIC	1304	#if EV_USE_MONOTONIC
1173	if (expect_true (have_monotonic))	1305	if (expect_true (have_monotonic))
1174	time_update_monotonic (EV_A);	1306	time_update_monotonic (EV_A);
1175	else	1307	else
1176	#endif	1308	#endif
1177	{	1309	{
1178	ev_rt_now = ev_time ();	1310	ev_rt_now = ev_time ();
1179	mn_now = ev_rt_now;	1311	mn_now = ev_rt_now;
1180	}	1312	}
1181		1313
1182	if (flags & EVLOOP_NONBLOCK || idlecnt)
1183	block = 0.;
1184	else
1185	{
1186	block = MAX_BLOCKTIME;	1314	block = MAX_BLOCKTIME;
1187		1315
1188	if (timercnt)	1316	if (timercnt)
1189	{	1317	{
1190	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1191	if (block > to) block = to;	1319	if (block > to) block = to;
1192	}	1320	}
1193		1321
1194	#if EV_PERIODICS	1322	#if EV_PERIODIC_ENABLE
1195	if (periodiccnt)	1323	if (periodiccnt)
1196	{	1324	{
1197	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1198	if (block > to) block = to;	1326	if (block > to) block = to;
1199	}	1327	}
1200	#endif	1328	#endif
1201		1329
1202	if (block < 0.) block = 0.;	1330	if (expect_false (block < 0.)) block = 0.;
1203	}	1331	}
1204		1332
1205	method_poll (EV_A_ block);	1333	backend_poll (EV_A_ block);
		1334	}
1206		1335
1207	/* update ev_rt_now, do magic */	1336	/* update ev_rt_now, do magic */
1208	time_update (EV_A);	1337	time_update (EV_A);
1209		1338
1210	/* queue pending timers and reschedule them */	1339	/* queue pending timers and reschedule them */
1211	timers_reify (EV_A); /* relative timers called last */	1340	timers_reify (EV_A); /* relative timers called last */
1212	#if EV_PERIODICS	1341	#if EV_PERIODIC_ENABLE
1213	periodics_reify (EV_A); /* absolute timers called first */	1342	periodics_reify (EV_A); /* absolute timers called first */
1214	#endif	1343	#endif
1215		1344
1216	/* queue idle watchers unless io or timers are pending */	1345	/* queue idle watchers unless other events are pending */
1217	if (idlecnt && !any_pending (EV_A))	1346	if (idlecnt && !any_pending (EV_A))
1218	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1219		1348
1220	/* queue check watchers, to be executed first */	1349	/* queue check watchers, to be executed first */
1221	if (checkcnt)	1350	if (expect_false (checkcnt))
1222	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1223		1352
1224	call_pending (EV_A);	1353	call_pending (EV_A);
1225	}
1226	while (activecnt && !loop_done);
1227		1354
1228	if (loop_done != 2)	1355	if (expect_false (loop_done))
1229	loop_done = 0;	1356	break;
		1357	}
		1358
		1359	if (loop_done == EVUNLOOP_ONE)
		1360	loop_done = EVUNLOOP_CANCEL;
1230	}	1361	}
1231		1362
1232	void	1363	void
1233	ev_unloop (EV_P_ int how)	1364	ev_unloop (EV_P_ int how)
1234	{	1365	{
1235	loop_done = how;	1366	loop_done = how;
1236	}	1367	}
1237		1368
1238	/*****************************************************************************/	1369	/*****************************************************************************/
1239		1370
1240	inline void	1371	void inline_size
1241	wlist_add (WL *head, WL elem)	1372	wlist_add (WL *head, WL elem)
1242	{	1373	{
1243	elem->next = *head;	1374	elem->next = *head;
1244	*head = elem;	1375	*head = elem;
1245	}	1376	}
1246		1377
1247	inline void	1378	void inline_size
1248	wlist_del (WL *head, WL elem)	1379	wlist_del (WL *head, WL elem)
1249	{	1380	{
1250	while (*head)	1381	while (*head)
1251	{	1382	{
1252	if (*head == elem)	1383	if (*head == elem)
…		…
1257		1388
1258	head = &(*head)->next;	1389	head = &(*head)->next;
1259	}	1390	}
1260	}	1391	}
1261		1392
1262	inline void	1393	void inline_speed
1263	ev_clear_pending (EV_P_ W w)	1394	ev_clear_pending (EV_P_ W w)
1264	{	1395	{
1265	if (w->pending)	1396	if (w->pending)
1266	{	1397	{
1267	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1268	w->pending = 0;	1399	w->pending = 0;
1269	}	1400	}
1270	}	1401	}
1271		1402
1272	inline void	1403	void inline_speed
1273	ev_start (EV_P_ W w, int active)	1404	ev_start (EV_P_ W w, int active)
1274	{	1405	{
1275	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1276	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1277		1408
1278	w->active = active;	1409	w->active = active;
1279	ev_ref (EV_A);	1410	ev_ref (EV_A);
1280	}	1411	}
1281		1412
1282	inline void	1413	void inline_size
1283	ev_stop (EV_P_ W w)	1414	ev_stop (EV_P_ W w)
1284	{	1415	{
1285	ev_unref (EV_A);	1416	ev_unref (EV_A);
1286	w->active = 0;	1417	w->active = 0;
1287	}	1418	}
1288		1419
1289	/*****************************************************************************/	1420	/*****************************************************************************/
1290		1421
1291	void	1422	void
1292	ev_io_start (EV_P_ struct ev_io *w)	1423	ev_io_start (EV_P_ ev_io *w)
1293	{	1424	{
1294	int fd = w->fd;	1425	int fd = w->fd;
1295		1426
1296	if (ev_is_active (w))	1427	if (expect_false (ev_is_active (w)))
1297	return;	1428	return;
1298		1429
1299	assert (("ev_io_start called with negative fd", fd >= 0));	1430	assert (("ev_io_start called with negative fd", fd >= 0));
1300		1431
1301	ev_start (EV_A_ (W)w, 1);	1432	ev_start (EV_A_ (W)w, 1);
…		…
1304		1435
1305	fd_change (EV_A_ fd);	1436	fd_change (EV_A_ fd);
1306	}	1437	}
1307		1438
1308	void	1439	void
1309	ev_io_stop (EV_P_ struct ev_io *w)	1440	ev_io_stop (EV_P_ ev_io *w)
1310	{	1441	{
1311	ev_clear_pending (EV_A_ (W)w);	1442	ev_clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))	1443	if (expect_false (!ev_is_active (w)))
1313	return;	1444	return;
1314		1445
1315	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1316		1447
1317	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1319		1450
1320	fd_change (EV_A_ w->fd);	1451	fd_change (EV_A_ w->fd);
1321	}	1452	}
1322		1453
1323	void	1454	void
1324	ev_timer_start (EV_P_ struct ev_timer *w)	1455	ev_timer_start (EV_P_ ev_timer *w)
1325	{	1456	{
1326	if (ev_is_active (w))	1457	if (expect_false (ev_is_active (w)))
1327	return;	1458	return;
1328		1459
1329	((WT)w)->at += mn_now;	1460	((WT)w)->at += mn_now;
1330		1461
1331	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1462	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1332		1463
1333	ev_start (EV_A_ (W)w, ++timercnt);	1464	ev_start (EV_A_ (W)w, ++timercnt);
1334	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1335	timers [timercnt - 1] = w;	1466	timers [timercnt - 1] = w;
1336	upheap ((WT *)timers, timercnt - 1);	1467	upheap ((WT *)timers, timercnt - 1);
1337		1468
1338	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1339	}	1470	}
1340		1471
1341	void	1472	void
1342	ev_timer_stop (EV_P_ struct ev_timer *w)	1473	ev_timer_stop (EV_P_ ev_timer *w)
1343	{	1474	{
1344	ev_clear_pending (EV_A_ (W)w);	1475	ev_clear_pending (EV_A_ (W)w);
1345	if (!ev_is_active (w))	1476	if (expect_false (!ev_is_active (w)))
1346	return;	1477	return;
1347		1478
1348	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1349		1480
1350	if (((W)w)->active < timercnt--)	1481	if (expect_true (((W)w)->active < timercnt--))
1351	{	1482	{
1352	timers [((W)w)->active - 1] = timers [timercnt];	1483	timers [((W)w)->active - 1] = timers [timercnt];
1353	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1354	}	1485	}
1355		1486
…		…
1357		1488
1358	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1359	}	1490	}
1360		1491
1361	void	1492	void
1362	ev_timer_again (EV_P_ struct ev_timer *w)	1493	ev_timer_again (EV_P_ ev_timer *w)
1363	{	1494	{
1364	if (ev_is_active (w))	1495	if (ev_is_active (w))
1365	{	1496	{
1366	if (w->repeat)	1497	if (w->repeat)
1367	{	1498	{
…		…
1370	}	1501	}
1371	else	1502	else
1372	ev_timer_stop (EV_A_ w);	1503	ev_timer_stop (EV_A_ w);
1373	}	1504	}
1374	else if (w->repeat)	1505	else if (w->repeat)
		1506	{
		1507	w->at = w->repeat;
1375	ev_timer_start (EV_A_ w);	1508	ev_timer_start (EV_A_ w);
		1509	}
1376	}	1510	}
1377		1511
1378	#if EV_PERIODICS	1512	#if EV_PERIODIC_ENABLE
1379	void	1513	void
1380	ev_periodic_start (EV_P_ struct ev_periodic *w)	1514	ev_periodic_start (EV_P_ ev_periodic *w)
1381	{	1515	{
1382	if (ev_is_active (w))	1516	if (expect_false (ev_is_active (w)))
1383	return;	1517	return;
1384		1518
1385	if (w->reschedule_cb)	1519	if (w->reschedule_cb)
1386	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1387	else if (w->interval)	1521	else if (w->interval)
…		…
1390	/* this formula differs from the one in periodic_reify because we do not always round up */	1524	/* this formula differs from the one in periodic_reify because we do not always round up */
1391	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1525	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1392	}	1526	}
1393		1527
1394	ev_start (EV_A_ (W)w, ++periodiccnt);	1528	ev_start (EV_A_ (W)w, ++periodiccnt);
1395	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1396	periodics [periodiccnt - 1] = w;	1530	periodics [periodiccnt - 1] = w;
1397	upheap ((WT *)periodics, periodiccnt - 1);	1531	upheap ((WT *)periodics, periodiccnt - 1);
1398		1532
1399	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1400	}	1534	}
1401		1535
1402	void	1536	void
1403	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1537	ev_periodic_stop (EV_P_ ev_periodic *w)
1404	{	1538	{
1405	ev_clear_pending (EV_A_ (W)w);	1539	ev_clear_pending (EV_A_ (W)w);
1406	if (!ev_is_active (w))	1540	if (expect_false (!ev_is_active (w)))
1407	return;	1541	return;
1408		1542
1409	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1410		1544
1411	if (((W)w)->active < periodiccnt--)	1545	if (expect_true (((W)w)->active < periodiccnt--))
1412	{	1546	{
1413	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1414	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1415	}	1549	}
1416		1550
1417	ev_stop (EV_A_ (W)w);	1551	ev_stop (EV_A_ (W)w);
1418	}	1552	}
1419		1553
1420	void	1554	void
1421	ev_periodic_again (EV_P_ struct ev_periodic *w)	1555	ev_periodic_again (EV_P_ ev_periodic *w)
1422	{	1556	{
1423	/* TODO: use adjustheap and recalculation */	1557	/* TODO: use adjustheap and recalculation */
1424	ev_periodic_stop (EV_A_ w);	1558	ev_periodic_stop (EV_A_ w);
1425	ev_periodic_start (EV_A_ w);	1559	ev_periodic_start (EV_A_ w);
1426	}	1560	}
1427	#endif	1561	#endif
1428		1562
1429	void
1430	ev_idle_start (EV_P_ struct ev_idle *w)
1431	{
1432	if (ev_is_active (w))
1433	return;
1434
1435	ev_start (EV_A_ (W)w, ++idlecnt);
1436	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1437	idles [idlecnt - 1] = w;
1438	}
1439
1440	void
1441	ev_idle_stop (EV_P_ struct ev_idle *w)
1442	{
1443	ev_clear_pending (EV_A_ (W)w);
1444	if (!ev_is_active (w))
1445	return;
1446
1447	idles [((W)w)->active - 1] = idles [--idlecnt];
1448	ev_stop (EV_A_ (W)w);
1449	}
1450
1451	void
1452	ev_prepare_start (EV_P_ struct ev_prepare *w)
1453	{
1454	if (ev_is_active (w))
1455	return;
1456
1457	ev_start (EV_A_ (W)w, ++preparecnt);
1458	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1459	prepares [preparecnt - 1] = w;
1460	}
1461
1462	void
1463	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1464	{
1465	ev_clear_pending (EV_A_ (W)w);
1466	if (!ev_is_active (w))
1467	return;
1468
1469	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1470	ev_stop (EV_A_ (W)w);
1471	}
1472
1473	void
1474	ev_check_start (EV_P_ struct ev_check *w)
1475	{
1476	if (ev_is_active (w))
1477	return;
1478
1479	ev_start (EV_A_ (W)w, ++checkcnt);
1480	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1481	checks [checkcnt - 1] = w;
1482	}
1483
1484	void
1485	ev_check_stop (EV_P_ struct ev_check *w)
1486	{
1487	ev_clear_pending (EV_A_ (W)w);
1488	if (!ev_is_active (w))
1489	return;
1490
1491	checks [((W)w)->active - 1] = checks [--checkcnt];
1492	ev_stop (EV_A_ (W)w);
1493	}
1494
1495	#ifndef SA_RESTART	1563	#ifndef SA_RESTART
1496	# define SA_RESTART 0	1564	# define SA_RESTART 0
1497	#endif	1565	#endif
1498		1566
1499	void	1567	void
1500	ev_signal_start (EV_P_ struct ev_signal *w)	1568	ev_signal_start (EV_P_ ev_signal *w)
1501	{	1569	{
1502	#if EV_MULTIPLICITY	1570	#if EV_MULTIPLICITY
1503	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1571	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1504	#endif	1572	#endif
1505	if (ev_is_active (w))	1573	if (expect_false (ev_is_active (w)))
1506	return;	1574	return;
1507		1575
1508	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1576	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1509		1577
1510	ev_start (EV_A_ (W)w, 1);	1578	ev_start (EV_A_ (W)w, 1);
1511	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1579	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1512	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1580	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1513		1581
1514	if (!((WL)w)->next)	1582	if (!((WL)w)->next)
1515	{	1583	{
1516	#if WIN32	1584	#if _WIN32
1517	signal (w->signum, sighandler);	1585	signal (w->signum, sighandler);
1518	#else	1586	#else
1519	struct sigaction sa;	1587	struct sigaction sa;
1520	sa.sa_handler = sighandler;	1588	sa.sa_handler = sighandler;
1521	sigfillset (&sa.sa_mask);	1589	sigfillset (&sa.sa_mask);
…		…
1524	#endif	1592	#endif
1525	}	1593	}
1526	}	1594	}
1527		1595
1528	void	1596	void
1529	ev_signal_stop (EV_P_ struct ev_signal *w)	1597	ev_signal_stop (EV_P_ ev_signal *w)
1530	{	1598	{
1531	ev_clear_pending (EV_A_ (W)w);	1599	ev_clear_pending (EV_A_ (W)w);
1532	if (!ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
1533	return;	1601	return;
1534		1602
1535	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1603	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1536	ev_stop (EV_A_ (W)w);	1604	ev_stop (EV_A_ (W)w);
1537		1605
1538	if (!signals [w->signum - 1].head)	1606	if (!signals [w->signum - 1].head)
1539	signal (w->signum, SIG_DFL);	1607	signal (w->signum, SIG_DFL);
1540	}	1608	}
1541		1609
1542	void	1610	void
1543	ev_child_start (EV_P_ struct ev_child *w)	1611	ev_child_start (EV_P_ ev_child *w)
1544	{	1612	{
1545	#if EV_MULTIPLICITY	1613	#if EV_MULTIPLICITY
1546	assert (("child watchers are only supported in the default loop", loop == default_loop));	1614	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1547	#endif	1615	#endif
1548	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1549	return;	1617	return;
1550		1618
1551	ev_start (EV_A_ (W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1552	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1620	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1553	}	1621	}
1554		1622
1555	void	1623	void
1556	ev_child_stop (EV_P_ struct ev_child *w)	1624	ev_child_stop (EV_P_ ev_child *w)
1557	{	1625	{
1558	ev_clear_pending (EV_A_ (W)w);	1626	ev_clear_pending (EV_A_ (W)w);
1559	if (!ev_is_active (w))	1627	if (expect_false (!ev_is_active (w)))
1560	return;	1628	return;
1561		1629
1562	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1630	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1563	ev_stop (EV_A_ (W)w);	1631	ev_stop (EV_A_ (W)w);
1564	}	1632	}
1565		1633
		1634	#if EV_STAT_ENABLE
		1635
		1636	# ifdef _WIN32
		1637	# undef lstat
		1638	# define lstat(a,b) _stati64 (a,b)
		1639	# endif
		1640
		1641	#define DEF_STAT_INTERVAL 5.0074891
		1642	#define MIN_STAT_INTERVAL 0.1074891
		1643
		1644	void
		1645	ev_stat_stat (EV_P_ ev_stat *w)
		1646	{
		1647	if (lstat (w->path, &w->attr) < 0)
		1648	w->attr.st_nlink = 0;
		1649	else if (!w->attr.st_nlink)
		1650	w->attr.st_nlink = 1;
		1651	}
		1652
		1653	static void
		1654	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1655	{
		1656	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1657
		1658	/* we copy this here each the time so that */
		1659	/* prev has the old value when the callback gets invoked */
		1660	w->prev = w->attr;
		1661	ev_stat_stat (EV_A_ w);
		1662
		1663	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1664	ev_feed_event (EV_A_ w, EV_STAT);
		1665	}
		1666
		1667	void
		1668	ev_stat_start (EV_P_ ev_stat *w)
		1669	{
		1670	if (expect_false (ev_is_active (w)))
		1671	return;
		1672
		1673	/* since we use memcmp, we need to clear any padding data etc. */
		1674	memset (&w->prev, 0, sizeof (ev_statdata));
		1675	memset (&w->attr, 0, sizeof (ev_statdata));
		1676
		1677	ev_stat_stat (EV_A_ w);
		1678
		1679	if (w->interval < MIN_STAT_INTERVAL)
		1680	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1681
		1682	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1683	ev_set_priority (&w->timer, ev_priority (w));
		1684	ev_timer_start (EV_A_ &w->timer);
		1685
		1686	ev_start (EV_A_ (W)w, 1);
		1687	}
		1688
		1689	void
		1690	ev_stat_stop (EV_P_ ev_stat *w)
		1691	{
		1692	ev_clear_pending (EV_A_ (W)w);
		1693	if (expect_false (!ev_is_active (w)))
		1694	return;
		1695
		1696	ev_timer_stop (EV_A_ &w->timer);
		1697
		1698	ev_stop (EV_A_ (W)w);
		1699	}
		1700	#endif
		1701
		1702	void
		1703	ev_idle_start (EV_P_ ev_idle *w)
		1704	{
		1705	if (expect_false (ev_is_active (w)))
		1706	return;
		1707
		1708	ev_start (EV_A_ (W)w, ++idlecnt);
		1709	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1710	idles [idlecnt - 1] = w;
		1711	}
		1712
		1713	void
		1714	ev_idle_stop (EV_P_ ev_idle *w)
		1715	{
		1716	ev_clear_pending (EV_A_ (W)w);
		1717	if (expect_false (!ev_is_active (w)))
		1718	return;
		1719
		1720	{
		1721	int active = ((W)w)->active;
		1722	idles [active - 1] = idles [--idlecnt];
		1723	((W)idles [active - 1])->active = active;
		1724	}
		1725
		1726	ev_stop (EV_A_ (W)w);
		1727	}
		1728
		1729	void
		1730	ev_prepare_start (EV_P_ ev_prepare *w)
		1731	{
		1732	if (expect_false (ev_is_active (w)))
		1733	return;
		1734
		1735	ev_start (EV_A_ (W)w, ++preparecnt);
		1736	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1737	prepares [preparecnt - 1] = w;
		1738	}
		1739
		1740	void
		1741	ev_prepare_stop (EV_P_ ev_prepare *w)
		1742	{
		1743	ev_clear_pending (EV_A_ (W)w);
		1744	if (expect_false (!ev_is_active (w)))
		1745	return;
		1746
		1747	{
		1748	int active = ((W)w)->active;
		1749	prepares [active - 1] = prepares [--preparecnt];
		1750	((W)prepares [active - 1])->active = active;
		1751	}
		1752
		1753	ev_stop (EV_A_ (W)w);
		1754	}
		1755
		1756	void
		1757	ev_check_start (EV_P_ ev_check *w)
		1758	{
		1759	if (expect_false (ev_is_active (w)))
		1760	return;
		1761
		1762	ev_start (EV_A_ (W)w, ++checkcnt);
		1763	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1764	checks [checkcnt - 1] = w;
		1765	}
		1766
		1767	void
		1768	ev_check_stop (EV_P_ ev_check *w)
		1769	{
		1770	ev_clear_pending (EV_A_ (W)w);
		1771	if (expect_false (!ev_is_active (w)))
		1772	return;
		1773
		1774	{
		1775	int active = ((W)w)->active;
		1776	checks [active - 1] = checks [--checkcnt];
		1777	((W)checks [active - 1])->active = active;
		1778	}
		1779
		1780	ev_stop (EV_A_ (W)w);
		1781	}
		1782
		1783	#if EV_EMBED_ENABLE
		1784	void noinline
		1785	ev_embed_sweep (EV_P_ ev_embed *w)
		1786	{
		1787	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1788	}
		1789
		1790	static void
		1791	embed_cb (EV_P_ ev_io *io, int revents)
		1792	{
		1793	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1794
		1795	if (ev_cb (w))
		1796	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1797	else
		1798	ev_embed_sweep (loop, w);
		1799	}
		1800
		1801	void
		1802	ev_embed_start (EV_P_ ev_embed *w)
		1803	{
		1804	if (expect_false (ev_is_active (w)))
		1805	return;
		1806
		1807	{
		1808	struct ev_loop *loop = w->loop;
		1809	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1810	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1811	}
		1812
		1813	ev_set_priority (&w->io, ev_priority (w));
		1814	ev_io_start (EV_A_ &w->io);
		1815
		1816	ev_start (EV_A_ (W)w, 1);
		1817	}
		1818
		1819	void
		1820	ev_embed_stop (EV_P_ ev_embed *w)
		1821	{
		1822	ev_clear_pending (EV_A_ (W)w);
		1823	if (expect_false (!ev_is_active (w)))
		1824	return;
		1825
		1826	ev_io_stop (EV_A_ &w->io);
		1827
		1828	ev_stop (EV_A_ (W)w);
		1829	}
		1830	#endif
		1831
1566	/*****************************************************************************/	1832	/*****************************************************************************/
1567		1833
1568	struct ev_once	1834	struct ev_once
1569	{	1835	{
1570	struct ev_io io;	1836	ev_io io;
1571	struct ev_timer to;	1837	ev_timer to;
1572	void (*cb)(int revents, void *arg);	1838	void (*cb)(int revents, void *arg);
1573	void *arg;	1839	void *arg;
1574	};	1840	};
1575		1841
1576	static void	1842	static void
…		…
1585		1851
1586	cb (revents, arg);	1852	cb (revents, arg);
1587	}	1853	}
1588		1854
1589	static void	1855	static void
1590	once_cb_io (EV_P_ struct ev_io *w, int revents)	1856	once_cb_io (EV_P_ ev_io *w, int revents)
1591	{	1857	{
1592	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1858	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1593	}	1859	}
1594		1860
1595	static void	1861	static void
1596	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1862	once_cb_to (EV_P_ ev_timer *w, int revents)
1597	{	1863	{
1598	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1864	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1599	}	1865	}
1600		1866
1601	void	1867	void
1602	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1868	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1603	{	1869	{
1604	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1870	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1605		1871
1606	if (!once)	1872	if (expect_false (!once))
		1873	{
1607	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1874	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1608	else	1875	return;
1609	{	1876	}
		1877
1610	once->cb = cb;	1878	once->cb = cb;
1611	once->arg = arg;	1879	once->arg = arg;
1612		1880
1613	ev_init (&once->io, once_cb_io);	1881	ev_init (&once->io, once_cb_io);
1614	if (fd >= 0)	1882	if (fd >= 0)
1615	{	1883	{
1616	ev_io_set (&once->io, fd, events);	1884	ev_io_set (&once->io, fd, events);
1617	ev_io_start (EV_A_ &once->io);	1885	ev_io_start (EV_A_ &once->io);
1618	}	1886	}
1619		1887
1620	ev_init (&once->to, once_cb_to);	1888	ev_init (&once->to, once_cb_to);
1621	if (timeout >= 0.)	1889	if (timeout >= 0.)
1622	{	1890	{
1623	ev_timer_set (&once->to, timeout, 0.);	1891	ev_timer_set (&once->to, timeout, 0.);
1624	ev_timer_start (EV_A_ &once->to);	1892	ev_timer_start (EV_A_ &once->to);
1625	}
1626	}	1893	}
1627	}	1894	}
1628		1895
1629	#ifdef __cplusplus	1896	#ifdef __cplusplus
1630	}	1897	}

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